Hall was Reynolds' stepdaughter, and he and her mother were in the process of divorcing, according to investigators. Authorities said Hall hired the men to kill Reynolds so she and her mother would inherit property and more than a dozen classic cars.

Reynolds' sons said they were not only angry but saddened by the news of her arrest.

"I know he was good to Johnetta and to that entire family, so for him to take his life like that it's hard to understand," Henry Reynolds said.

"Somebody he took care of that could do something like this, it just blows my mind," Bill "Little Bill" Reynolds added.

Scott County Sheriff Dan McClain said Hall was interviewed just hours after the crime and was quick to produce an alibi at an Austin convenience store.

"She had a receipt to show she had bought her bread at Circle K and exactly what time she bought her bread which is kind of odd," McClain said.

Investigators dug deeper. On that gas station surveillance Hall, who claimed to be alone the entire afternoon, was seen talking to two men.

She also told the sheriff she later stopped at an Austin storage unit. Again the two men, later identified as Heald and Mathis, appeared on surveillance.

That's when the sheriff said a disturbing picture of the crime began to emerge.

"They exchanged payment for the killing there, in the form of personal items. NASCAR memorabilia, actually," McClain said.

The memorabilia belonged to Bill Reynolds, McClain said.

Thanks to that surveillance video, investigators were able to decipher a license plate, leading them to the suspects.

During extensive interviews, the sheriff said both men revealed the plan had been discussed for weeks and in the days before the crime, Hall provided Heald a handgun.

While Henry Reynolds is grateful for the quick action of local and state law enforcement, he believes there may be even more to the case.

"We feel there may be some more people involved and we just want to make sure there is justice for my dad," Reynolds said.

In fact, McClain said he believes there is more to the case as well.

Investigators are pouring over hundreds of emails and text messages. McClain said it is possible there could be additional charges and arrests.